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Message-Id: <20250325-b4-panel-refcounting-v1-3-4e2bf5d19c5d@redhat.com>
Date: Tue, 25 Mar 2025 13:24:10 -0400
From: Anusha Srivatsa <asrivats@...hat.com>
To: Neil Armstrong <neil.armstrong@...aro.org>,
Jessica Zhang <quic_jesszhan@...cinc.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Luca Ceresoli <luca.ceresoli@...tlin.com>,
Anusha Srivatsa <asrivats@...hat.com>
Subject: [PATCH 3/5] drm/panel: get/put panel reference in
drm_panel_add/remove()
Take the panel reference and put it back as required
using the helpers introduced in previous patch.
drm_panel_add() and drm_panel_remove()
add a panel to the global registry and removes a panel
respectively, use get() and put() helpers to keep up
with refcounting.
Signed-off-by: Anusha Srivatsa <asrivats@...hat.com>
---
drivers/gpu/drm/drm_panel.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c
index 079c3c666a2ddc99a0051d1a3c9ba65d986dd003..11a0415bc61f59190ef5eb378d1583c493265e6a 100644
--- a/drivers/gpu/drm/drm_panel.c
+++ b/drivers/gpu/drm/drm_panel.c
@@ -79,6 +79,7 @@ EXPORT_SYMBOL(drm_panel_init);
*/
void drm_panel_add(struct drm_panel *panel)
{
+ drm_panel_get(panel);
mutex_lock(&panel_lock);
list_add_tail(&panel->list, &panel_list);
mutex_unlock(&panel_lock);
@@ -96,6 +97,7 @@ void drm_panel_remove(struct drm_panel *panel)
mutex_lock(&panel_lock);
list_del_init(&panel->list);
mutex_unlock(&panel_lock);
+ drm_panel_put(panel);
}
EXPORT_SYMBOL(drm_panel_remove);
--
2.48.1
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